The rollers are made from a non marking polypropylene with nylon v bush and nylon washers. 4 x Rollers. Single roller kit. 2 x 4 hole plates. What’s in the kit 4 x U-bolts.
eBay
6 Inch Marine Keel Roller Heavy Duty PU Black Boat Trailer Roller for Boat Trailer Boat Trailer Keel Roller Marine Keel Roller
Aliexpress UK
Includes wobble rollers - rollers can 'wobble' on the shaft to fit most hull shapes.
eBay
Boat Transom Saver Adjustable Spring Shock Absorbing With Composite Head for outboard motor ,Holds Engine,Roller,Boat Trailers
Aliexpress UK
Includes wobble rollers - rollers can 'wobble' on the shaft to fit most hull shapes.
eBay
Stationary Roller Bracket Assembly Galvanized Steel Boat Trailer Rollers With Brackets Keel Roller Assembly Kit For 2-3 Inches
Aliexpress UK
Keel ‘V’ Roller – 127mm Width | 19mm Bore | Ø42–56mm | Non-Marking Polyurethane. Width : 127mm. Keel V Roller Boat Trailer 16mm Bore 128mm Width Non Mark Blue Domar Italy. Keel Roller + Bracket 16mm Bore for Boat Trailers Flat Non-Marking Polyurethane.
eBay
Heavy Duty Boat Trailer Roller Wheel Replacement Marine Wobble Roller for Boat Marine Motor Yacht Rubber Boat Dinghy Accessories
Aliexpress UK
Our new Roller bank system 28 is an Ideal UPGRADE if your trailer is fitted with carpeted bunks or heavy rubber marking rollers. Ideal upgrade on your existing trailer to give better support and easier launch & recovery.
eBay
2Pcs Boat Trailer Guide Pole Cover 36 Inch Boat Trailer Guide Protective Pad for Ski Boat Fishing Boats Sailboat Trailer
Aliexpress UK
Fully galvanised steel heavy duty 125mm keel roller to suit all drawbars with a 50mm or 70mm box section. Height to top of keel roller: 310mm.
eBay
8inch Self Centering Keel Roller Bow Stop Heavy Duty PU Trailer Roller Bow Stop 0.67in Center Aperture for Boat Trailer Yacht
Aliexpress UK
Maximum load capacity： 1000KG. This support bracket, with keel rollers included, can be installed on a boat trailer to support the bottom part of the boat, which makes it an indispensable boat trailer part.
eBay
SucceBuy 350lbs Kayak Trailer Cart Foldable Canoe Trolley Cart with 12'' Tires for Paddle Boards Float Mats Jon Boats Transport
Aliexpress UK
Includes 4 cranked mounting brackets, and 8 non-marking rollers. Includes wobble rollers - rollers can 'wobble' on the shaft to fit most hull shapes. Steel bracket with high-quality non-marking rollers that will not leave black marks on the hull of the boat.
eBay
SucceBuy Boat Trailer Guide Adjustable Guide Poles 2PCS Rustproof Galvanized Steel Trailer Guide for Ski Boat Sailboat Trailer
Aliexpress UK